[1]Liu Zhuoxin,Gao Peng,Mu Xingmin,et al.Effects of Vegetation Restoration on Soil Hydrophysical Properties in Loess Region[J].Research of Soil and Water Conservation,2023,30(06):206-213.[doi:10.13869/j.cnki.rswc.2023.06.046]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 06
Page number:
206-213
Column:
Public date:
2023-10-10
- Title:
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Effects of Vegetation Restoration on Soil Hydrophysical Properties in Loess Region
- Author(s):
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Liu Zhuoxin1, Gao Peng1,2, Mu Xingmin1,2, Qiu Dexun2, Ding Yingying1
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(1.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, China; 2.Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China)
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- Keywords:
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vegetation restoration; soil hydrophysical properties; Loess Plateau
- CLC:
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S152
- DOI:
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10.13869/j.cnki.rswc.2023.06.046
- Abstract:
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[Objective] Elucidating the influence of long-term returning farmland to forest, shrubland, and grassland on soil hydrophysical properties on the Loess Plateau is conducive to improving soil hydrology research and providing a theoretical basis for the subsequent ecological restoration of the Loess Plateau. [Methods] Through sampling analysis and double-ring infiltrometer test, the soil hydrophysical properties such as soil organic matter, bulk density, porosity, soil moisture and infiltration capacity of different vegetation restoration types were analyzed. [Results] Vegetation restoration had a significant impact on soil physical properties(p<0.05), and the resulting changes were most obvious in the 0—40 cm soil layer. The content of organic matter, porosity and the stability of water-stable aggregates significant increased, the soil bulk density decreased significantly. Converting farmland to forest, shrubland, and grassland enhanced soil infiltration capacity. Compared with farmland, the initial infiltration of Suide and Shenmu grassland increased by 50% and 31%, respectively; the stable infiltration rates of grassland, shrubs and forest in Suide area increased by 76%, 11% and 19%, respectively; those in Shenmu area increased by 53%, 128% and 58%, respectively. Soil stable infiltration and average infiltration were significantly negatively correlated with bulk density(p<0.05), and significantly positively correlated with total porosity, capillary porosity(p<0.05)and organic matter content(p<0.05). [Conclusion] Vegetation restoration has a significant effect on soil hydrophysical properties, soil infiltration performance has been significantly improved, and organic matter content, bulk density and porosity have significant effects on infiltration performance.